“…The concept of general international law peremptory norms was defined in the Vienna Convention on the Law of Treaties, adopted in 1969 (Article 53) and further developed by international judiciary, state practice and legal doctrine. Despite some criticism (Brownlie, 1988), it is widely employed not only in the area of law of treaties, but more broadly in relation to issues of States' jurisdiction (Nagle, 2011) and immunities (Potesta, 2010;Caplan, 2003), in international human rights law (Bianchi, 2008;Simma & Alston, 1992), in the field of international responsibility (Weatherall, 2015;Tams & Asteriti, 2013), etc. Since 2015 the topic of jus cogens has been included into the ILC's program of work and in 2019 it adopted on first reading the Text of the draft conclusions on peremptory norms of general international law (jus cogens) (hereafter -Text of the draft conclusions on jus cogens).…”